Missing function in lua API: move an element on the top of the stack ?

[Mildred <mildred593@...>(by way of Mildred <ml.mildred593@...>)]

Hi

I found in the lua manual a function: lua_insert which put the element
on the top of the stack at a given index.
But is there a solution to put an element at a given index on the top
of the stack (and not a copy of the element like lua_pushfield do) ?

Thanks.
-- 
Mildred
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